News: Billion, as in NINE zeroes.

After it's first five days on the shelf, Infinity Ward's Call of Duty: Modern Warfare 2 posted sales of $550 million. Today, publisher Activision is happy to report that the game has crossed the $1 billion mark in retail sales worldwide.

"Call of Duty:Modern Warfare 2 has exceeded our expectations and shattered theatrical box office and video game records," said Robert Kotick, CEO of Activision Blizzard. "There are only a handful of entertainment properties that have ever reached the $1 billion mark, which illustrates the power of the Call of Duty franchise and mass appeal of this game."

To put this in a little perspective, Modern Warfare 2's billion dollar take is more than double the amount of sales brought in by every game combined in an average month in the United States.

While I realize Activision is using worldwide numbers, that is still a tremendous accomplishment for a game that has only been on the shelves for two months.